The new version IV of the System of Identification of Potential Beneficiaries of Social Programs (SISBÉN) made changes in the indicators, which is why the SISBÉN office of the municipality of Cereté required to analyze the registered information of the ceretanos. Therefore, the purpose of this business practice report was to determine the accessibility to basic environmental and health sanitation services according to SISBÉN IV indicators of people in groups A and B of the municipality of Cereté, Córdoba, considering that these groups are the most vulnerable and are the least likely to have access to basic sanitation and drinking water. The study was of a crosssectional descriptive type, quantitative approach, through observation and analysis. Low accessibility to basic environmental sanitation services was found in the various urban, central and rural areas, where the sewerage service was the one with the least access. With regard to health services, most are affiliated to the subsidized regime and some are not affiliated. A large part of the population of group A, are in early ages and in group B in adulthood; therefore, those of group A have as occupation student and tasks in the house and those of group B have as occupation work, study and tasks in the house. According to these results, it can be said that although work has been done to improve these services by the public administration, access to sanitation services is still precarious, for which, better investment and reformulation of policies and actions are required.